Permeable refractory material for a gas purged nozzle
AssigneeVesuvius Crucible Company
InventorsPriyadarshi Desai, Duane Debastiani, Dominique Janssen
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Abstract
A permeable, resin-bonded composition is described, which finds utility as a porous element in a gas-injection nozzle. The permeable composition is notably useful in a canless, resin-bonded, gas-injection nozzle, characterized by an impermeable, resin-bonded composition replaces the metal can. Advantageously, the resin-bonded compositions include an oxygen getter for scrubbing oxygen before the oxygen can reach the molten steel. A method of manufacturing the nozzle is described and includes copressing a standard, resin-bonded composition around the permeable, resin-bonded composition. The pressed piece may be cured at temperatures below about 800° C.
Claims18
1-17. (canceled)
A permeable material having a permeability of at least about 50 cD characterized by the material being resin-bonded and made from a composition comprising:
- a) a refractory aggregate;
- b) 0.5-15 wt. % of at least one oxygen getter;
- and
- c) a sufficient amount of binder.
Dependencies are inferred from the claim text.